Commit d02ef87d authored by Simon Trimmer's avatar Simon Trimmer Committed by Takashi Iwai
Browse files

ALSA: hda: cs35l56: Enable low-power hibernation mode on i2c 



This can now be re-enabled as the sequence to reliably wake the device
has been implemented in the shared ASoC code.

This has a functional dependency on commit 3df761bd
("ASoC: cs35l56: Wake transactions need to be issued twice")

To protect against this, enabling hibernation is conditional on
CS35L56_WAKE_HOLD_TIME_US being defined, which indicates that the new
hibernation sequences are available.

Signed-off-by: default avatarSimon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: default avatarRichard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20231113164029.1156669-1-rf@opensource.cirrus.com


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 713f040c

sound/pci/hda/cs35l56_hda_i2c.c

+4 −0
Original line number Diff line number Diff line
@@ -21,6 +21,10 @@ static int cs35l56_hda_i2c_probe(struct i2c_client *clt) 
		return -ENOMEM;



	cs35l56->base.dev = &clt->dev;



#ifdef CS35L56_WAKE_HOLD_TIME_US

	cs35l56->base.can_hibernate = true;

#endif

	cs35l56->base.regmap = devm_regmap_init_i2c(clt, &cs35l56_regmap_i2c);

	if (IS_ERR(cs35l56->base.regmap)) {

		ret = PTR_ERR(cs35l56->base.regmap);